diff --git a/apps/desktop/src/lib/__tests__/sql/semantic/completion.spec.ts b/apps/desktop/src/lib/__tests__/sql/semantic/completion.spec.ts
index 63b1aa641..73715f935 100644
--- a/apps/desktop/src/lib/__tests__/sql/semantic/completion.spec.ts
+++ b/apps/desktop/src/lib/__tests__/sql/semantic/completion.spec.ts
@@ -88,4 +88,13 @@ describe("semantic SQL completion candidates", () => {
 
     expect(items.find((item) => item.label === "User Name")?.apply).toBe('"User Name"');
   });
+
+  it("suggests all target columns for insert column lists", () => {
+    const columnsByTable = new Map<string, SqlCompletionColumn[]>([["users", ["id", "name", "email"].map((name) => ({ name, table: "users" }))]]);
+
+    const { context, items } = semanticCompletion("INSERT INTO users (|", { columnsByTable });
+
+    expect(context.insertTable).toBe("users");
+    expect(items.find((item) => item.type === "snippet" && item.label === "users.*")?.apply).toBe("id, name, email");
+  });
 });
diff --git a/apps/desktop/src/lib/__tests__/sql/sqlCompletion.context.spec.ts b/apps/desktop/src/lib/__tests__/sql/sqlCompletion.context.spec.ts
index 2a953a8ca..c46da28be 100644
--- a/apps/desktop/src/lib/__tests__/sql/sqlCompletion.context.spec.ts
+++ b/apps/desktop/src/lib/__tests__/sql/sqlCompletion.context.spec.ts
@@ -160,7 +160,7 @@ describe("sqlCompletion scoped context classification", () => {
 
     expect(context.contextKind).toBe("column");
     expect(context.insertSchema).toBe("dbo");
-    expect(context.insertTable).toBe("users");
+    expect(context.insertTable).toBe("Users");
     expect(context.exclusiveColumnSuggestions).toBe(true);
   });
 
diff --git a/apps/desktop/src/lib/sql/sqlCompletion.ts b/apps/desktop/src/lib/sql/sqlCompletion.ts
index fd76416b3..f0366f3c5 100644
--- a/apps/desktop/src/lib/sql/sqlCompletion.ts
+++ b/apps/desktop/src/lib/sql/sqlCompletion.ts
@@ -1256,6 +1256,7 @@ class SqlCompletionProvider {
     if (!context.exclusiveTableSuggestions && context.suggestColumns) {
       this.items.push(...buildColumnItems(context, this.input.columnsByTable, this.dialect));
       this.items.push(...buildSelectAllColumnItems(context, this.input.columnsByTable, this.t, this.dialect));
+      this.items.push(...buildInsertAllColumnItems(context, this.input.columnsByTable, this.t, this.dialect));
     }
 
     if (context.referencedTables.length > 0 && !context.suggestColumns && !context.insertTable) {
@@ -1957,11 +1958,12 @@ function detectComparisonLeftColumn(beforeCursor: string): string | undefined {
 }
 
 function detectInsertColumnListContext(beforeCursor: string): { table: string; schema?: string } | null {
-  const cleaned = beforeCursor
-    .replace(/'[^']*'/g, "''")
-    .replace(/"[^"]*"/g, '""')
-    .toLowerCase();
-  const match = /\binsert\s+into\s+([A-Za-z_][\w$]*(?:\.[A-Za-z_][\w$]*)?)\s*\([^)]*$/i.exec(cleaned);
+  // Keep quoted identifiers intact so schema/table targets resolve to their
+  // real names instead of placeholder string contents.
+  const cleaned = beforeCursor.replace(/'[^']*'/g, "''");
+  const identifier = '(?:"[^"]+"|`[^`]+`|[A-Za-z_][\\w$]*)';
+  const qualifiedIdentifier = `${identifier}(?:\\.${identifier})?`;
+  const match = new RegExp(`\\binsert\\s+into\\s+(${qualifiedIdentifier})\\s*\\([^)]*$`, "i").exec(cleaned);
   if (!match) return null;
   const fullTable = match[1];
   if (!fullTable) return null;
@@ -2744,6 +2746,27 @@ function buildSelectAllColumnItems(context: SqlCompletionContext, columnsByTable
   return items;
 }
 
+function buildInsertAllColumnItems(context: SqlCompletionContext, columnsByTable: Map<string, SqlCompletionColumn[]>, t?: SqlCompletionTranslations, dialect?: "mysql" | "postgres" | "sqlserver"): SqlCompletionItem[] {
+  if (!context.insertTable) return [];
+  const columns = uniqueColumnsByName(columnsForInsertTarget(context, columnsByTable));
+  if (columns.length === 0) return [];
+
+  const label = `${context.insertTable}.*`;
+  if (!selectAllColumnItemMatchesPrefix(label, { name: context.insertTable, schema: context.insertSchema }, columns, context.prefix)) return [];
+
+  const expansion = columns.map((column) => quoteSqlIdentifier(column.name, dialect)).join(", ");
+  const countText = (t?.starExpansionColumns ?? "{count} columns").replace("{count}", String(columns.length));
+  return [
+    {
+      label,
+      type: "snippet" as const,
+      detail: `${countText}: ${expansion.length > 60 ? expansion.slice(0, 57) + "..." : expansion}`,
+      apply: expansion,
+      boost: 2450 + selectAllColumnItemPrefixBoost(label, { name: context.insertTable, schema: context.insertSchema }, columns, context.prefix),
+    },
+  ];
+}
+
 function referencedTablesForSelectAllColumns(context: SqlCompletionContext): SqlCompletionReferencedTable[] {
   if (!context.qualifier) return context.referencedTables;
   const qualifier = context.qualifier;
@@ -2986,25 +3009,37 @@ function isInTableListContext(beforeToken: string): boolean {
   return /,\s*$/.test(beforeToken) && /\b(?:from|join|update|into)\b/i.test(beforeToken);
 }
 
-function buildColumnItems(context: SqlCompletionContext, columnsByTable: Map<string, SqlCompletionColumn[]>, dialect?: "mysql" | "postgres" | "sqlserver"): SqlCompletionItem[] {
-  // Collect all columns from the map (all tables have been fetched)
+function collectCompletionColumns(columnsByTable: Map<string, SqlCompletionColumn[]>): Array<SqlCompletionColumn & { key: string }> {
   const allColumns: Array<SqlCompletionColumn & { key: string }> = [];
   for (const [key, cols] of columnsByTable.entries()) {
     for (const col of cols) {
       allColumns.push({ ...col, key });
     }
   }
+  return allColumns;
+}
+
+function columnsForInsertTarget(context: SqlCompletionContext, columnsByTable: Map<string, SqlCompletionColumn[]>): Array<SqlCompletionColumn & { key: string }> {
+  if (!context.insertTable) return [];
+  const tableKey = normalizeIdentifierPart(context.insertTable);
+  const schemaKey = context.insertSchema ? normalizeIdentifierPart(context.insertSchema) : undefined;
+  const qualifiedKey = schemaKey ? normalizeCompletionKey(`${context.insertSchema}.${context.insertTable}`) : undefined;
+  return collectCompletionColumns(columnsByTable).filter((column) => {
+    if (normalizeIdentifierPart(column.table) !== tableKey) return false;
+    if (!schemaKey) return true;
+    if (column.schema && normalizeIdentifierPart(column.schema) === schemaKey) return true;
+    return !!qualifiedKey && normalizeCompletionKey(column.key) === qualifiedKey;
+  });
+}
+
+function buildColumnItems(context: SqlCompletionContext, columnsByTable: Map<string, SqlCompletionColumn[]>, dialect?: "mysql" | "postgres" | "sqlserver"): SqlCompletionItem[] {
+  // Collect all columns from the map (all tables have been fetched)
+  const allColumns = collectCompletionColumns(columnsByTable);
 
   // Handle INSERT column list: filter to only the target table
   let relevantCols = allColumns;
   if (context.insertTable) {
-    const tableLower = context.insertTable.toLowerCase();
-    if (context.insertSchema) {
-      const schemaLower = context.insertSchema.toLowerCase();
-      relevantCols = allColumns.filter((c) => c.table.toLowerCase() === tableLower && (c.schema?.toLowerCase() === schemaLower || c.key.toLowerCase() === `${schemaLower}.${tableLower}`));
-    } else {
-      relevantCols = allColumns.filter((c) => c.table.toLowerCase() === tableLower);
-    }
+    relevantCols = columnsForInsertTarget(context, columnsByTable);
   } else if (context.qualifier) {
     const q = context.qualifier;
     const qLower = q.toLowerCase();
diff --git a/packages/app-tests/sqlCompletion.test.ts b/packages/app-tests/sqlCompletion.test.ts
index 5a7c2d299..c28e2d4f5 100644
--- a/packages/app-tests/sqlCompletion.test.ts
+++ b/packages/app-tests/sqlCompletion.test.ts
@@ -1297,6 +1297,13 @@ test("detects INSERT INTO with schema-qualified table", () => {
   assert.equal(context.insertSchema, "public");
 });
 
+test("detects MySQL backtick-qualified INSERT INTO column list context", () => {
+  const sql = "INSERT INTO `other_db`.`orders` (";
+  const context = getSqlCompletionContext(sql, sql.length);
+  assert.equal(context.insertTable, "orders");
+  assert.equal(context.insertSchema, "other_db");
+});
+
 test("suggests columns for INSERT INTO target table", () => {
   const items = buildSqlCompletionItems("INSERT INTO users (", "INSERT INTO users (".length, {
     tables,
@@ -1309,6 +1316,92 @@ test("suggests columns for INSERT INTO target table", () => {
   assert.ok(columnItems.some((item) => item.label === "email"));
 });
 
+test("suggests all target columns for INSERT INTO column list", () => {
+  const items = buildSqlCompletionItems("INSERT INTO users (", "INSERT INTO users (".length, {
+    tables,
+    columnsByTable,
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "users.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, "id, name, email");
+});
+
+test("keeps INSERT INTO all-column expansion available after a column prefix", () => {
+  const items = buildSqlCompletionItems("INSERT INTO users (id", "INSERT INTO users (id".length, {
+    tables,
+    columnsByTable,
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "users.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, "id, name, email");
+});
+
+test("quotes PostgreSQL identifiers in INSERT INTO all-column expansion", () => {
+  const sql = 'INSERT INTO public."OrderLines" (';
+  const items = buildSqlCompletionItems(sql, sql.length, {
+    tables: postgresQuotedTables,
+    columnsByTable: postgresQuotedColumnsByTable,
+    databaseType: "postgres",
+    dialect: "postgres",
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "OrderLines.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, 'article, "OrderId", "User", "has""quote"');
+});
+
+test("suggests all target columns for schema-qualified INSERT INTO column lists", () => {
+  const sql = "INSERT INTO dbo.Users (";
+  const items = buildSqlCompletionItems(sql, sql.length, {
+    tables: [{ name: "Users", schema: "dbo", type: "table" }],
+    columnsByTable: new Map([
+      [
+        "dbo.Users",
+        [
+          { name: "Id", table: "Users", schema: "dbo", dataType: "bigint" },
+          { name: "DisplayName", table: "Users", schema: "dbo", dataType: "nvarchar" },
+        ],
+      ],
+    ]),
+    databaseType: "sqlserver",
+    dialect: "sqlserver",
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "Users.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, "Id, DisplayName");
+});
+
+test("scopes INSERT INTO all-column expansion to the database-qualified MySQL target", () => {
+  const sql = "INSERT INTO other_db.orders (";
+  const items = buildSqlCompletionItems(sql, sql.length, {
+    tables: [{ name: "orders", schema: "other_db", type: "table" }],
+    columnsByTable: mysqlCrossDatabaseColumnsByTable,
+    databaseType: "mysql",
+    dialect: "mysql",
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "orders.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, "id, number, status");
+});
+
+test("suggests all target columns for MySQL backtick-qualified INSERT INTO", () => {
+  const sql = "INSERT INTO `other_db`.`orders` (";
+  const items = buildSqlCompletionItems(sql, sql.length, {
+    tables: [{ name: "orders", schema: "other_db", type: "table" }],
+    columnsByTable: mysqlCrossDatabaseColumnsByTable,
+    databaseType: "mysql",
+    dialect: "mysql",
+  });
+
+  const allColumns = items.find((item) => item.type === "snippet" && item.label === "orders.*");
+  assert.ok(allColumns);
+  assert.equal(allColumns.apply, "id, number, status");
+});
+
 // --- Column data type in detail ---
 
 test("shows column data type in detail", () => {